WinSCP C# Library - Cannot open file “\\.\nul”. Access denied

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JulienPlanche
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WinSCP C# Library - Cannot open file “\\.\nul”. Access denied

Hello all !
I have a Raspberry Pi with SFTP enabled for one user which is "wifi". When I connect using Filezilla client, it works great. But when I use the WinSCP Library (the latest), it failed with

{WinSCP.SessionRemoteException: Cannot open file "\\.\nul". Accès refusé
   at WinSCP.SessionLogReader.Read(LogReadFlags flags)
   at WinSCP.ElementLogReader.Read(LogReadFlags flags)
   at WinSCP.SessionElementLogReader.Read(LogReadFlags flags)
   at WinSCP.CustomLogReader.TryWaitForNonEmptyElement(String localName, LogReadFlags flags)
   at WinSCP.CustomLogReader.WaitForNonEmptyElement(String localName, LogReadFlags flags)
   at WinSCP.Session.WaitForGroup()
   at WinSCP.Session.Open(SessionOptions sessionOptions)
   at DumboNetwork.Controllers.SFTP..ctor(String args)}
Here is the code used

sessionOptions = new SessionOptions
            {
                Protocol = Protocol.Sftp,
                HostName = args,
                UserName = "wifi",
                Password = "password",
                SshHostKeyFingerprint = "ssh-rsa 2048 6c:53:02:91:9f:08:3d:a1:d3:45:e5:67:8a:88:f8:14",
                GiveUpSecurityAndAcceptAnySshHostKey = true,
                PortNumber = 22,
            };
            client = new Session();
            client.SessionLogPath = ApplicationData.Current.LocalFolder.Path + "\\" + "debug.log";
            client.DisableVersionCheck = true;

            int attempts = 0;
            do
            {
                try
                {
                    client.Open(sessionOptions);
                }
                catch (Exception e)
                {
                    attempts++;
                    Debug.WriteLine(e);
                }
            } while (attempts < _connectionRetryAttempts && !client.Opened);
Can you help me ? Thanks !

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martin
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Re: WinSCP C# Library - Cannot open file “\\.\nul”. Access denied

My guess is that you are trying to use WinSCP .NET assembly with some very old version of WinSCP.exe (and you try to workaround that by setting client.DisableVersionCheck = true).

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